Dicourse characteristics of educational interaction from the point of view its constituent units (a teacher-text-a student)

The article is devoted to the interaction investigation as a special kind of interactional discourse formation and reveals its specific parameters. To form the view of the interactional discourse as an independent and complete object and give its definition it is necessary to distinguish its constituent units (i.e. to present the structure of educational discourse), to determine its illocutive tasks and consider the main characteristics.